Use the meter to monitor and measure the energy usage of any 13 amp rated electrical appliance. Plug the meter in to a powered mains socket and then plug the appliance you want to monitor into it. It also calculates the cost of electricity used and assesses the carbon footprint.Voltage Rating: 240V ac 50HzCurrent rating: 13AMaximum load: 3120WPower Consumption: 0.5WMetering: Voltage 200 to 276V AC . +/-1.5%Frequency range 45 to 65HzCurrent range 0.005 to 13A +/-2%Power range 0.1 to 3120W +/-2%Power Factor: 0.00 to 1.00Overload power setting and alarmAccumulative electricity usage range